Mechanical movement.



H. MURRAY.

lMECHANICAL MOVEMENT.

APPucATmN man AuG.9. 1915.

Pateud Sept. 26, l9l6.

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HUGH MURRAY, OF VANCOUVER, BRITISH COLUMBIA, CANADA.

MECHANICAL MOVEMENT. Y

Specification of Letters Patent. lzttentd Sept. 26, 1916.

Application led August 9, 1915. Serial No. 44,527.

T0 all whom 'may concern.'

Be it known that I, HUGH MURRAY, a subject of the King of Great Britain, and a resident of the city of Vancouver, in the Province of British Columbia, Canada, have invented certain new and useful Improve ments in Mechanical Movements, of which thefollowing is a specification.

My invention relates to improvements in mechanica-l movements, and the object of my invention is to devise a means for converting reciprocating motion into rotary motion in a simple efficient manner and with the minimum of working parts. l attain this object by the construction illustrated in the accompanying dra-wings in which- Figure 1 is a side elevation of my device, one of the disks being removed. Fig. 2 a plan view of Fig. 1 with the upper guide plate removed. Fig. 3 is a sectional .view

' taken on the line A-B of Fig. 1. Fig. e is a face view of one of the disks and pinion segment. Fig. 5 is a sectional view of the assembled disks and pinion segment. Fig. 6 is a view illustrating the method of carrying the disks over the centers.

Similar gures of reference indicate similar parts throughout the several views.

1 indicates the lower guide,and 2 the upper guide, of my device, the lower guide 1 I being mounted on any suitable foundation and the upper guide 2 being carried by any suitable supports such as the brackets 3 and 1, the supports being, however, in accordance with the design of the machine in which the movement maybe embodied. A crosshead 5 is slidably mounted between the guides 1 and 2, which crosshead is provided with an opening 6, the `longitudinal edges of which are formed as .racks .7 and 8. EX- tending through the opening 6 of crosshead 5 is a shaft9, rotatably mounted in suitably secured bearings 10 and 11, to whichV Figs. Ll and 5. It will, of course, be under-Y stood that the disks 12 and 13 and the members 18 and 19 need not necessarily be separate elements, as. each disk may be cast in one piece, in which casel the groove 2O will be formed in the casting. rllhe upper edge of the groove, that is, the upper edge when the disks arein'the position shown in Fig. 5, is formed as two sides of a triangle, the apex being slightly rounded, while the lower edge is curved and the mouth of the groove at each end is wider than it is at the center.

The object in forming the upper edge of groove 2O triangular in shape vis to enable the segment 14 to be rotated in either direction with equal facility, as it willl be seen, on referring to Fig. 6, that the segment will be carried ver the center in either direction, as required, according to whichever side of the trianglethe roller bears upon; that is to say, if the crosshead be started to reciprocate with the roller 21 bearing on the side of the triangle, as shown in Fig. 6, the segment will turn in the direction indicated by the arrow. If, however, before starting, the y disk be moved so that the roller bears on the other side of the triangle, then the segment will be turned in the opposite direction when the crosshead is reciprocated. Thus the reversing of the direction of rotation is provided for in a simple manner. Q ,l E

' Thel ends of the opening 6 of crosshead 5 are rounded as at 20 and 21 in Fig. 1, to allow for the rolling thereon of the plain rounded edge 22 of the pinion segment 14 when the same is being' carried over the centers, and mounted on the crosshead 5 on each side close to each rounded endA of the opening 6 and on the longitudinal center line are rollers 23-24 and 25-26, these rollers being rotatably carried on pins 27 and 28 respectively, secured in the crosshead. The diameter of the respective 'rollers is slightly less than the width of the groove 20V at the narrowest part thereof, while the length of the rollers is slightly less than the depth of the groove.

29 indicates the reciprocating rod, Secured to the crosshead 5 .in any suitablemanner, such as is indicated at 30 in Fig. 1, and which rod may derive its motion from any suitable source of power. The-rod 29, ltherey be seen that if the rod 29 be moved to theVV left handY the pinion segment 14 will'l be rotated by .means of the teeth rack 7 until it can go no farther. This movement carries .the-'segment and the disks12 and V13 partly over the centei', but not sufficiently far enough for the segment to engage the upper rack S. 1n this position, however, the

rollers 23 and 24 are engaged in the grooves Y 20 of the disks, as indicated in Fig. 6,.from

which it will be clear that ifV the'rod 29 be now moved to the right, the rollers 23 and 24, bearing on the angledl side of the grooves, will carry the segment still farther over the center until it engages the rack 8 which will thenrotate it still farther until the grooves 20 engage the rollers 25 and 26 at the other end of tliestroke, when these rollers come into action in the same manner-as already described with reference to rollers 23 and 24. It will thus be seen that, by means of the racks 7 and 8 the vsegment 14 is rotated through the greater part of a revolution, and that the completion of the full revolution is accomplished by the action of the rollers 23-24 and 25-26 in the grooves 20 of the disks at each end of the stroke. The segment 14 being secured to shaft `9, the shaft rotates with the segment, so that the reciproeating motion. of rod 29 is converted to rotary motion in shaft 9, or vice versa; if the power be applied 'to shaft 9 by belt', chain or gearing, the rotary motion of shaft 9 will Copies otthis pstent'may be obtained for be converted into reciprocating motion of` rod 29.

What I claim as my invention is l. For use in a device -of the class described, a. pinion segment, and an offset cir-.-

tension portion on each side of said segment wherebya space is formed between said eX- tensions.

2. For use in a devicey of the class de'- scribed, a pinion segment, and a U-shapedl extension portion` carried by said segment, thek legs of said extension being interiorly grooved.

8. A mechanical. movement, comprising a cross` head mounted to reciprocate, such'` cross head .being provided with a pair of oppositely disposed Ytoothed racks,'a rotatably mounted pinion segment adapted for alternate engagement with said racks so as to be rotated therebythroughV part of a revolution as the erossheadreciproeates,saidseg- Y ment having a curved passageway` there- Y through, and means on said cross head;V adapted to be engaged alternately by said passageway whereby complete rotation .oft

the segment is eifected, said means and passageway being. adapted to effect the. partial rotation of thesegment from oneirack tothe other in either direction.

4. For use in a `device ofV the class lde'- scribed, a pinion segment, and ak AU-shaped extension portion carried by said segment,

the legs of-said extensionV being interiorlyv grooved one of the walls of the groove being Y tension portion carried by said segment, and

a `V-shaped lug carried by the extremity of n l each leg of theU. i

Dated at Vancouver, of July, 1915.

Y HUGH MURRAY.

l/Vitnesses JAMES TAYLOR,- soEL D. 0R12.V

B. 0 this. ninety tive cents each, by addressing the Commissioner of `Patentk Washingtoml). 03 

